Alanson gary



PATENTED JUNE 15, 1869.

A.GARY. TELEGRAPH WIRE.

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ALANSON CARY, QF NEW YORK, N. 11, :ASSIGNOR TO Thfi AMERICAN COMPOUND TELEGRAPH -'WLRE COMPANY, OF SAME" PLACE.

Lmm Patent No. 91,416, dated Jliue 15, 1869.

MROVEMENT IN TELEGRAPH-WIRE.

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To all ohm it may concern I Be it known that I, ALANSON CARY, of the city, county, and State of New York, have invented a new and useful Improvement in Telegraph-Wire; and I do diereby declare that the following is afnll, clear, and

exact description thereof, which will enable those skilled in the art to make and use the same, reference being bad to the accompanying drawings, forminga part of this specificatiom The nature oi'this invention relates to improvements in wires to be used for telegraph-purposes, whereby it is designed to improve the quality of the same.

It consists in covering a steel wire with a spiral ribbon of copper, and in protecting and uniting the same by a peculiar method of soldering, as-will be hereinafter more fully described. I

In the dmwings-- Figure 1 represents a section of my improved wire in side elevation; 5

Figure 2 represents a cross-section of steel or iron wire, such as I use for the core;

Figure 3 represents a cross-section of the same provided with the copper ribboh; and

Figure 4 represents a cross-section of the same when in a finished condition.

Similar lettersof reference indicate corresponding parts.

Copper is well known to possess the best conducting quality for electrical cun'ents, andcopper wires strung upon posts have been used for telegraph purposes.

But as copper has a. low degree of tensile strength, the copper telegraph-wires require more numerous supports, andsoon become sagged by their own weight, or by the 'pressure'of the wind, or other causes; and experience shows that they ordinarily require more constant attendance 'and expense for repairs than either iron or steel wires, which are now commonly a used.

To obviate the objections heretofore connected with the use of copper for line-wi res for telegraphic-purposes, it has been proposed to use a central-supporting corewirpnof steel, covered with copper; and in order to construct such compound wires, it has been; proposed to draw or roll the same from compoundbars composed of the two metals.

It is to be understood, therefore, that I doubt claim as. my invention the broad idea of making compound conducting-wires.

.My invention relates only to the method of making thesame.

I take a small iron or steel wire, and coat it with tin, or other suitable metal, either by passing the wire througlra hot bath of tin, or etfecting the.covering in some other suitable manner.

I then take a ribbon of copper, and coil it spirally around the said central wire in a smooth and compact manner, then draw it through a die, to compact the copper; and afterwards I pass it through another bath of tin, or other metal; having a sufficient temperature to fuse the tin coating on the core-.wire, whereby the said core-wire and the copper ribbonbecome soldered together, and the exterior folds or edges of the copper ribbon are aiso filled with tin, and become soldered together, thus adding-strength to the wire, preventing the lodgment of foreign matter, or the ingress of moisture.

- In some cases, I pass the ribbon of copper through a bath of tin, or other metal, before applying it tothe core-wire, and after the copper ribbon has been passed through the bath, I wind it upon the corewire, as before described; and I then submit the compound wire to heat, either by passing through another bath of tin, or other substance, so as to fuse the tin, and cause the copper to be soldered to the core, and the edges of the ribbon -to become united, as hereinbeforc described,

Having thus described my invention,

What claim as new, and desire to secure by Letters Patent, isy A telegraph-wire, constructed as herein described, that into say, having the steel core, and the strip or stlips of copper, or other good electric conductor, applied thereto, and soldered in place by means of abath of tin, substantially as set forth'.

' ALAN SON GARY.-

Witnesses:

Fnnnx BLOCKLEY, Annx. F. RoBnn'rs. 

